public async Task TestGetLastBlock()
{
var provider = GetMockProvider <Block>();
var iconService = new IconService(provider.Object);
// ReSharper disable once UnusedVariable
var result = await iconService.GetLastBlock();
provider.Verify(x =>
x.SendRequestAsync(It.Is <Request>(request => IsRequestMatches(request, "icx_getLastBlock", null)),
It.IsAny <IRpcConverter <Block> >()), Times.Once);
}